Fall 2007
ENSC 895/ENSC 460: SPECIAL TOPICS: THEORY, ANALYSIS, AND SIMULATION OF NONLINEAR CIRCUITS

Assignment #11:

  • Read:
        R. C. Melville, Lj. Trajkovic, S. C. Fang, and L. T. Watson, ``Artificial parameter homotopy methods for the dc operating point problem,'' IEEE Trans. on CAD, vol. 12, pp. 861-877, June 1993.
        Lj. Trajkovic, ``Homotopy methods for computing dc operating points,'' invited contribution to the Encyclopedia of Electrical and Electronics Engineering, J. G. Webster, Ed. New York: John Wiley & Sons, 1999, vol. 9, pp. 171-176.
        A. Dyess, E. Chan, H. Hofmann, W. Horia, and Lj. Trajkovic, ``Simple implementations of homotopy algorithms for finding dc solutions of nonlinear circuits,'' Proc. IEEE Int. Symp. Circuits and Systems, Orlando, FL, May 1999, vol. VI, pp. 290-293.

  • 1. For the two circuits from Assignment #10, problem No. 2, run SPICE (any version) and obtain transfer characteristics v-i across the one-port when:
  • voltage driven
  • current driven.
    Use default transistor models.
    Choose R's so that each one-port exhibits negative differential resistance (NDR).
    For example, for circuit 2(b), chose: R1 = 110 Ohm, R2 = 237 Ohm, R3 = 21.5 kOhm, and R5 = 21.5 kOhm.

    Posted: November 22, 2007
    Due: December 2, 2007.

    Last modified: Thursday November 22 23:24:30 PST 2007.